Blast drying oven is mainly distinguished from the structure of the box and the temperature control level. According to the structure of the box, we can divide the blower drying box into desktop blower drying box and vertical blower drying box; according to the temperature of the high and low, we can divide the blower drying box into electric constant temperature blower drying box and high temperature blower drying box. Blast drying oven as a most common drying equipment, widely used in industrial and mining enterprises laboratory, medicine and health, scientific research units for drying, baking, melting wax, sterilization, curing use.
Distinction between benchtop and vertical drying oven
The vertical drying oven adopts the rectangular floor-standing structure, which is generally placed directly on the ground in the test room. Test instrumentation is generally in the upper side of the drying box, easy to operate. Vertical blast drying box using the U.S. original imported fan, vertical, vertical forced convection, so that the temperature inside the chamber is uniform, according to national standards (± 2%) because the duct structure is more special, the fan at the bottom of the box, natural air convection. Vertical blast drying box power and structure is larger, suitable for a variety of products or materials and electrical, instrumentation, instrumentation, components, electronics, electricians and automotive, aviation, communications, plastics, machinery, chemical, food, chemicals, hardware tools in constant temperature environmental conditions for drying and a variety of constant temperature adaptability test.
Tablet blower drying box adopts horizontal box structure, the instrument is on the right side of the box, the box is compact and easy to test mobile. In industrial and mining enterprises, colleges and universities, biopharmaceuticals, food processing, scientific research, medical units and various laboratories for non-flammable and explosive and non-volatile substances for drying, baking, melting wax and disinfection, sterilization. Desktop blast drying oven using hot air circulation system by the fan can run continuously at high temperatures and special air ducts, the temperature inside the chamber is uniform, widely used in glassware drying, experimental samples, food, chemical substances, thermal denaturation, thermal hardness, thermal softening, moisture exclusion, bio-engineering, utensils, appliances, dry heat sterilization, drying and aging of electronic components.
Electrothermal constant temperature blast drying box and high temperature blast drying box distinction
High-temperature blast drying box adopts imported more than one high-power fan, dual-airway heat circulation system, stainless steel high-temperature electric heater through the wind cycle, rapid heating of the working chamber. The working chamber adopts mirror stainless steel and super heat preservation high quality cotton, can make the temperature of the box up to 600 ℃ high temperature, widely used in high temperature drying of special materials, workpiece heating installation, material high temperature test, chemical raw materials reaction processing, ultra-high temperature oven, higher working temperature, high temperature drying of special materials, workpiece heating heat treatment, high temperature test of materials, and so on.
Electrical constant temperature blast drying box adopts air conditioning mode, forced internal circulation ventilation, balanced temperature regulation. The back of the box is equipped with air inlet and outlet to achieve the balance of air pressure inside the box. The drying box adopts PT100 platinum resistance temperature sensor, digital display temperature regulator for temperature control, sensitive temperature control, easy operation, reliable performance, digital direct display of the working temperature, intuitive and easy to read. The drying oven is widely used for baking melting, drying or other heating of specimens, the maximum working temperature of 300 ℃, the temperature accuracy of ± 0.1 ℃. Electrothermal constant temperature blast drying box is suitable for determining the moisture in coal, drying items, drying heat treatment and other heating purposes.
1, box 2, control panel 3, door 4, observation window 5, shelves 6, door puller
7, power switch 8, temperature controller 9, nameplate 10, feet
I. Method of use
1. Put the items to be dried into the drying box, close the door.
2. Turn the power switch to "1", the power switch is on, the display has a digital display.
3. According to the operating instructions of the temperature controller, set the required working temperature and working time (working time can not be set).
4. The device will automatically run the required working conditions, turn off the power switch after use and remove the items.
※ If the operating temperature is too high (generally higher than 70 ℃), be sure to wait until the equipment is cooled down before removing the items
II. Temperature controller instructions
1. Temperature Setting
a. In the normal operating state, press the SET key to enter the temperature setting state, at this time, the PV display shows the SP, the SV display the first bit of flashing
b. Press the shift key to shift the blinking bit to the desired setting position;
c. Press the minus key or plus key to adjust the number to the desired value;
d. Press the SET key twice, the instrument will return to the normal working state, the temperature setting is completed, and the instrument will run according to the new setting value.
2. Timing Function
a. In normal working condition, press SET key twice to enter timing setting state, at this time, PV display shows ST, SV display shows 0 and blinking;
b. Press shift key to shift the blinking to the desired setting position;
c. Press minus key or plus key to adjust the digits to the desired value;
d. Press SET key once, the meter returns to normal working condition, the temperature setting is completed and the meter operates according to the new setting value. d. Press the SET key, the instrument enters the timer running state, and the running indicator flashes;
e. The timer function is counting down, in the timer running state, press the shift key, the SV display shows the remaining time of the timer;
f. The remaining time of the timer resets to zero, and the instrument enters the end of the timer state, and the SV display shows End, which flashes, and all the indicator lamps except the wind speed indicator flashes;
c. Press the decrease key or increase key to adjust the digit to the desired value;
c. At this time, the SV display shows End, and flashes, at the same time, all the indicators except the wind speed indicator are off;
g. In the end of the timing state, press the SET key, the instrument returns to the normal working state.
h. At the end of the timer state, the measured value shown on the PV display will drop to the ambient temperature due to the temperature control part of the instrument stops working, this is a normal phenomenon.
i. If the timer function is not needed, be sure to set the timer time to zero.
j. If there is an accidental power failure during the operation of the timer function, the remaining time of the timer will be reset to zero automatically when the power is restored.
k. Timing range of this device: 1 to 9999 minutes or 1 to 9999 hours.
III. Troubleshooting: Phenomenon Principle Processing No power No power socket Replace the socket Plug is not plugged in or disconnected Plug the plug or connect the line Fuse is open Replace the fuse Power switch is not closed Close the power switch Temperature inside the box does not rise Setting temperature is low Adjustment of the set temperature Heater is bad Replace the heater Temperature controller Bad Replace the temperature controller Temperature sensor connecting line is loose Tighten the sensor connecting line nuts Setting temperature and the box
Temperature error is big Temperature sensor is bad Replace the temperature sensor Temperature out of control Temperature sensor fixed off Fix the temperature sensor Temperature controller is bad, SCR is bad Replace the temperature controller, SCR